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CDROM: Implement auto-pause at end of track

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This commit is contained in:
Connor McLaughlin 2019-11-12 20:31:59 +10:00
parent 85413218cb
commit 8e06f86db8
3 changed files with 59 additions and 25 deletions
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6
src/common/cd_image.h
View file

@ -142,6 +142,12 @@ public:
u8 data[SUBCHANNEL_BYTES_PER_FRAME];
u16 ComputeCRC() const;
SubChannelQ& operator=(const SubChannelQ& q)
{
std::copy(q.data, q.data + SUBCHANNEL_BYTES_PER_FRAME, data);
return *this;
}
};
static_assert(sizeof(SubChannelQ) == SUBCHANNEL_BYTES_PER_FRAME, "SubChannelQ is correct size");

69
src/core/cdrom.cpp
View file

@ -106,6 +106,7 @@ bool CDROM::DoState(StateWrapper& sw)
sw.DoBytes(&m_last_sector_subheader, sizeof(m_last_sector_subheader));
sw.DoBytes(&m_last_subq, sizeof(m_last_subq));
sw.Do(&m_last_cdda_report_frame_nibble);
sw.Do(&m_auto_pause_track_number);
sw.Do(&m_cd_audio_volume_matrix);
sw.Do(&m_next_cd_audio_volume_matrix);
sw.Do(&m_xa_last_samples);
@ -432,7 +433,7 @@ void CDROM::SetAsyncInterrupt(Interrupt interrupt)
DeliverAsyncInterrupt();
}
void CDROM::CancelAsyncInterrupt()
void CDROM::ClearAsyncInterrupt()
{
m_pending_async_interrupt = 0;
m_async_response_fifo.Clear();
@ -1046,6 +1047,7 @@ void CDROM::BeginReading(bool cdda)
m_sector_buffer.clear();
m_last_cdda_report_frame_nibble = 0xFF;
m_auto_pause_track_number = Truncate8(m_media->GetTrackNumber());
m_drive_state = cdda ? DriveState::Playing : DriveState::Reading;
m_drive_remaining_ticks = GetTicksForRead();
@ -1175,14 +1177,33 @@ void CDROM::DoTOCRead()
void CDROM::DoSectorRead()
{
// TODO: Error handling
CDImage::SubChannelQ subq;
if (!m_media->ReadSubChannelQ(&subq))
Panic("SubChannel Q read failed");
if (m_mode.auto_pause && BCDToDecimal(subq.track_number_bcd) != m_auto_pause_track_number)
{
// we don't want to update the position if the track changes, so we check it before reading the actual sector.
Log_DevPrintf("Auto pause at the end of track %u (LBA %u)", m_auto_pause_track_number,
m_media->GetPositionOnDisc());
ClearAsyncInterrupt();
m_async_response_fifo.Push(m_secondary_status.bits);
SetAsyncInterrupt(Interrupt::INT4);
m_secondary_status.ClearActiveBits();
m_drive_state = DriveState::Idle;
return;
}
u8 raw_sector[CDImage::RAW_SECTOR_SIZE];
if (!m_media->ReadSubChannelQ(&m_last_subq) || !m_media->ReadRawSector(raw_sector))
if (!m_media->ReadRawSector(raw_sector))
Panic("Sector read failed");
if (m_drive_state == DriveState::Reading)
ProcessDataSector(raw_sector);
ProcessDataSector(raw_sector, subq);
else if (m_drive_state == DriveState::Playing)
ProcessCDDASector(raw_sector);
ProcessCDDASector(raw_sector, subq);
else
Panic("Not reading or playing");
@ -1190,11 +1211,15 @@ void CDROM::DoSectorRead()
m_system->SetDowncount(m_drive_remaining_ticks);
}
void CDROM::ProcessDataSector(const u8* raw_sector)
void CDROM::ProcessDataSector(const u8* raw_sector, const CDImage::SubChannelQ& subq)
{
std::memcpy(&m_last_sector_header, &raw_sector[SECTOR_SYNC_SIZE], sizeof(m_last_sector_header));
std::memcpy(&m_last_sector_subheader, &raw_sector[SECTOR_SYNC_SIZE + sizeof(m_last_sector_header)],
sizeof(m_last_sector_subheader));
// TODO: Check SubQ checksum.
m_last_subq = subq;
m_secondary_status.header_valid = true;
Log_DevPrintf("Read sector %u: mode %u submode 0x%02X", m_media->GetPositionOnDisc() - 1,
@ -1219,7 +1244,7 @@ void CDROM::ProcessDataSector(const u8* raw_sector)
}
else
{
ProcessXAADPCMSector(raw_sector);
ProcessXAADPCMSector(raw_sector, subq);
}
// Audio+realtime sectors aren't delivered to the CPU.
@ -1231,7 +1256,7 @@ void CDROM::ProcessDataSector(const u8* raw_sector)
if (HasPendingAsyncInterrupt())
{
Log_WarningPrintf("Data interrupt was not delivered");
CancelAsyncInterrupt();
ClearAsyncInterrupt();
}
if (!m_sector_buffer.empty())
{
@ -1337,7 +1362,7 @@ static void ResampleXAADPCM(const s16* samples_in, u32 num_samples_in, SPU* spu,
*sixstep_ptr = sixstep;
}
void CDROM::ProcessXAADPCMSector(const u8* raw_sector)
void CDROM::ProcessXAADPCMSector(const u8* raw_sector, const CDImage::SubChannelQ& subq)
{
std::array<s16, CDXA::XA_ADPCM_SAMPLES_PER_SECTOR_4BIT> sample_buffer;
CDXA::DecodeADPCMSector(raw_sector, sample_buffer.data(), m_xa_last_samples.data());
@ -1384,7 +1409,7 @@ void CDROM::ProcessXAADPCMSector(const u8* raw_sector)
}
}
void CDROM::ProcessCDDASector(const u8* raw_sector)
void CDROM::ProcessCDDASector(const u8* raw_sector, const CDImage::SubChannelQ& subq)
{
// For CDDA sectors, the whole sector contains the audio data.
Log_DevPrintf("Read sector %u as CDDA", m_media->GetPositionOnDisc());
@ -1396,25 +1421,25 @@ void CDROM::ProcessCDDASector(const u8* raw_sector)
{
m_last_cdda_report_frame_nibble = frame_nibble;
Log_DebugPrintf("CDDA report at track[%02x] index[%02x] rel[%02x:%02x:%02x]", m_last_subq.track_number_bcd,
m_last_subq.index_number_bcd, m_last_subq.relative_minute_bcd, m_last_subq.relative_second_bcd,
m_last_subq.relative_frame_bcd);
Log_DebugPrintf("CDDA report at track[%02x] index[%02x] rel[%02x:%02x:%02x]", subq.track_number_bcd,
subq.index_number_bcd, subq.relative_minute_bcd, subq.relative_second_bcd,
subq.relative_frame_bcd);
m_async_response_fifo.Clear();
ClearAsyncInterrupt();
m_async_response_fifo.Push(m_secondary_status.bits);
m_async_response_fifo.Push(m_last_subq.track_number_bcd);
m_async_response_fifo.Push(m_last_subq.index_number_bcd);
m_async_response_fifo.Push(subq.track_number_bcd);
m_async_response_fifo.Push(subq.index_number_bcd);
if (m_last_subq.absolute_frame_bcd & 0x10)
{
m_async_response_fifo.Push(m_last_subq.relative_minute_bcd);
m_async_response_fifo.Push(0x80 | m_last_subq.relative_second_bcd);
m_async_response_fifo.Push(m_last_subq.relative_frame_bcd);
m_async_response_fifo.Push(subq.relative_minute_bcd);
m_async_response_fifo.Push(0x80 | subq.relative_second_bcd);
m_async_response_fifo.Push(subq.relative_frame_bcd);
}
else
{
m_async_response_fifo.Push(m_last_subq.absolute_minute_bcd);
m_async_response_fifo.Push(m_last_subq.absolute_second_bcd);
m_async_response_fifo.Push(m_last_subq.absolute_frame_bcd);
m_async_response_fifo.Push(subq.absolute_minute_bcd);
m_async_response_fifo.Push(subq.absolute_second_bcd);
m_async_response_fifo.Push(subq.absolute_frame_bcd);
}
m_async_response_fifo.Push(0); // peak low
@ -1423,6 +1448,8 @@ void CDROM::ProcessCDDASector(const u8* raw_sector)
}
}
m_last_subq = subq;
// Apply volume when pushing sectors to SPU.
if (m_muted)
return;

9
src/core/cdrom.h
View file

@ -181,7 +181,7 @@ private:
bool HasPendingAsyncInterrupt() const { return m_pending_async_interrupt != 0; }
void SetInterrupt(Interrupt interrupt);
void SetAsyncInterrupt(Interrupt interrupt);
void CancelAsyncInterrupt();
void ClearAsyncInterrupt();
void DeliverAsyncInterrupt();
void SendACKAndStat();
void SendErrorResponse(u8 reason = 0x80);
@ -204,9 +204,9 @@ private:
void DoIDRead();
void DoTOCRead();
void DoSectorRead();
void ProcessDataSector(const u8* raw_sector);
void ProcessXAADPCMSector(const u8* raw_sector);
void ProcessCDDASector(const u8* raw_sector);
void ProcessDataSector(const u8* raw_sector, const CDImage::SubChannelQ& subq);
void ProcessXAADPCMSector(const u8* raw_sector, const CDImage::SubChannelQ& subq);
void ProcessCDDASector(const u8* raw_sector, const CDImage::SubChannelQ& subq);
void BeginSeeking(bool read_after_seek, bool play_after_seek);
void LoadDataFIFO();
@ -245,6 +245,7 @@ private:
CDXA::XASubHeader m_last_sector_subheader{};
CDImage::SubChannelQ m_last_subq{};
u8 m_last_cdda_report_frame_nibble = 0xFF;
u8 m_auto_pause_track_number = 0xFF;
std::array<std::array<u8, 2>, 2> m_cd_audio_volume_matrix{};
std::array<std::array<u8, 2>, 2> m_next_cd_audio_volume_matrix{};